Machine design

lmeca2801  2018-2019  Louvain-la-Neuve

Machine design
5 credits
30.0 h + 30.0 h
Raucent Benoît; Raucent Benoît (compensates Simar Aude); Servais Thomas (compensates Raucent Benoît); Simar Aude;
This course is taught in the first year of the master MECA and ELME mechatronics. It assumes that students already have basic skills in technical drawing. The aim of the course is to introduce the elementary knowledge necessary for the mechanical design of the elements that compose a machine. It is thus the basic course before a specialization 'design and manufacturing' and will contribute to prepare students to a future job as R&D engineer in the technical department of a company.
Main themes
Functional analysis of machines and their components
Properties of component
Elements of calculus of machine components.

At the end of this learning unit, the student is able to :


Specific learning outcomes of the course


·         Write  functional specifications for a machine

·         Identify the functionalities of a machine (actuation, bearing systems, transmission, sealing, ')

·         Estimate the installed and maximum power, the energetic consumption and the efficiency of a machine

·         Design a simple machine following an adapted methodology

·         Identify the basic hypotheses of elements dimensioning

·         Dimensioning  following  various  criteria  (yield  strength,  elastic  compliance,  fatigue)  of  usual elements (e.g. shafts)

·         Dimensioning while taking into account the effect of dynamic loading, stress concentration and residual stresses

·         Choose machine components (bearing, gasket, transmission) Read and interpret the drawing of an existing machine

·         Hand drawing of machine components and overall drawings

·         Placing tolerances for a mechanical system

·         Machine component design : threaded fastener and power screws, rivet and welding rolling bearing, sliding bearings,  clutches and brakes, power transmssion components (gears, belt, chains,  etc..), shaft and assocated part (key, pin, coupling, ¿)



In consideration of the reference table AA of the program " Master's degree civil engineer mechanics ", this course contributes to the development, to the acquisition and to the evaluation of the following experiences of learning:


AA1.1, AA1.2

AA2.1, AA2.2, AA2.3, AA2.4, AA2.5, AA2.6, AA2.7, AA2.8

AA4.3, AA4.4



The contribution of this Teaching Unit to the development and command of the skills and learning outcomes of the programme(s) can be accessed at the end of this sheet, in the section entitled “Programmes/courses offering this Teaching Unit”.
First part :functional analysis of machines and their components
·         Functional requirements (Specification conditions)
·         Principal functions of components (actuation, bearing systems , transmission) Origin of loads
Second part : properties of component use
·         Geometric characteristics
·         Tolerances and adjustments, shape tolerances, surface conditions, roughness and scale effects
·         Residual stresses
Third part : elements of calculus of machine components
·         Dimensioning  in relation to various failure criteria : elastic  buckling, plastic yielding, fatigue, while accounting for dynamic loads, stress  concentration, residual stresses, safety factors
·         Investigated components : threaded fastener and power screws, rivet and welding rolling bearing, sliding bearings, spur gears, helical, bevel and worn gears,  clutches and brakes, Power transmssion components (belt, chains,,  etc..), shaft and assocated part (key, pin, coupling, ')
Teaching methods
The course are taught by PBL by groups of 6 students. A project on identification of tolerances is also part of the course.
Evaluation methods
The students will be evaluated based on the report of the project on tolerances and an exam where theywill have to solve problems and draw part of a machine.
Faculty or entity

Programmes / formations proposant cette unité d'enseignement (UE)

Title of the programme
Master [120] in Electro-mechanical Engineering

Master [120] in Mechanical Engineering